Septic tank



Feb. 28, 1928.

R. C. WEBB SEPTiQ TANK Filed May 4. 1926 Zlmnmtoc farm/ebb Patented Feb. 28, 1928.

titer-Sr ROBERT:C(WEBBgOF 'BATON ROUGE, LOUISIANA.-

' snnrrc TANK;

Applicationffileii ma -4, 1926. Serial 110,106,708;

This invention relates to scptictanks and the general object of the invention is to pro-' iii-shaped in form to provide upwardly extendinglegs and provide apipe connecting said legs this pipe being normally inactive butacting, in'case the main pipe of'th-e tankshould become cloggechto permit liquids to pass bv'er h m the inlet leg to the outlet leg, this pipe further acting toprevent the tank from getting air bound. 7

My invention. is illustrated in the accompanying'drawings wl1erein,: a

Figure 1 is a vertical sectional view. through aseptictank constructed in accordance with my invention;'

Fig' 2 is a top view of the tank;

Referring to these drawings it willb e seen" that the septic tank isU-shaped in form to provide a longitudinally extending portion A, a vertical inlet leg B and a vertical outlet leg C. The part A consists of a cylindrical pipe section 10 which may be made or concrete, earthen ware, or other suitable material, but is preferably made of concrete,- one end of this pipe section 10 having a vertical fiat edge face 11 adapted to abut against a corresponding pipe section 10 for the portion B.

Extending vertically downward to. form the portion Bis the pipe section 12, the lower edge of which iscut on a bevel or miter as at '13 to abut against the angular end of the section 10. The abuttingcangular ends of-the sections 10 and 12 are formed at diametrically opposite points with interlocking lugs and notches 14, the lug 14 engaging in the corresponding notch and preventing any downward movement of the pipe sec tion 12 relative to the pipe section 10. The opposite leg C also consists of the pipe section .12 having its lower end beveled on a I angle as at 13, to abut against the end of the corresponding pipe section 10 and it is also provided with interlocking lugs and notches 14. v

The vertical leg Bis closed at its upper end by a cap 15 and an inlet pipe 16 enters the top of this cap. The leg C adjacent its upper end is provided with an angular outlet pipe 17 which is disposed below the cap 18 and whichha-s a vertical,portionezttentl ing downward, ii the leg C I and, a. horizontal portion extending through the side wall; of f v the leg C and discharging intoiasec ond'tank O 19. This tank 19 is about 3 or; 4; long, is closedat the topby a cap 20, ahdlis provided with an angularoutlet pipe2lf Thista'nk 19 may be called the"heavy duty tank. I

An interchange pipe or circulating "pipe.

22 connects the outlet leg G f th 13 tank I with the inlet legBg- This'interchangepipe is preferably madein twosectionsflhe sec tion 22 being angular in form to extend'into the leg Band then downwardtherein, This interchange. pipe is for the'purp'ose of causing the propercirculationof water within the tank that is, to keepitlieltank from geting airbound and also to keep the water from moving from one side to the other, If

at any time the main portion ofthe septic tank should become' st opped up this interchange p1pe22 wouldpermit the water to I pass from one side to therother This will permit the tank to be kept in use for several years without any stoppage." The angular end22 of the pipe 22 is designed to be submerged in the water in the septic tank in order to keep any depositst'rom getting to the other side or leg of the septic tank. This tank is designed to be buried in the ground to any desired depth, and the jointsare cemented to connect the several sections of the tank. The tanks are then installed and ready for operation. In operation, the sewage will enter the main tank and remain in this main tank a sufliciently long time to become purified and the supernatant water in this main tank will Y How oi? into the tank 19, will'become fur- 5 thcr purified and will then'flo'w off through the pipe 21 to any suitable distributing point as, for instance, to a ditch, canal, creek 'or through ordinary 'drain'pipcs in the ground.

The tank formed by the section B con- 10o stitutes a gas. chamber where the materialis first broken down, while the tank formed by the section C isthe fermenting chamber.- Some of the material passes on into the tank 19 andsome passes back into the portion B. 1

This process goes on until the workis fin ished. The tank 19 acts as a seal preventing air getting back into the section C andinteri :tering with fermentation, as air otherwise" would do. The portion 19 acts to further in, 7

clear up the water and gives it a second clarification. When proper chemicals are used in this auxiliary tank 19, such as creoste,-carbolic acid and other chemicals,

they deodorize the discharged water of any odor that it might have.

1. A septic tank comprising a horizontal. tubular body formed in two sections, the

sections having abutting ends and the outer ends of sald sections having angularly disposed end faces formed with notches and vertical tubular legs, the lower edge of which are beveled to fit against the angular I posed end faces formed with notches and V with lugs interlocking with said notches,

vertical tubular legs, the lower edges of.

which are beveled to fit against the angular ends of the first named-sections and formed caps for said vertical legs, aninlet pipe entering the upper end of one leg, and an outletpipe'leading fromthe upper end of one leg,; an outletpipe leading from the upper end of the other leg, and an interchange pipe connecting said legs'adjacent their upper ends, said pipe within the inlet leg having a downwardly extending portion.

3. A septic tank formed in two tubular sections of uniform diameter throughout their length, each section comprising a verti'cal leg section and a horizontal leg section, each leg section being cemented to the end of the corresponding horizontal section and each leg section having a cap; at its upper end, the ends of. the horizontal sections being cemented to eachother, an inlet pipe entering one of said legs, an outlet pipe extending'froin the other leg, and an interchangeable pipe connecting the upper ends of the legs and formed in two sections.

4. A septic tank comprising a'horizonta-l' tubular body portion having upwardly extendingv legs at its ends, the body portion of the legs being of uniform diameter throughout the entire length of the tank, an inlet pipe discharging into one of said legs, anoutlet pipe extending, from the other leg and having a downwardly turned inner extremity, an interchange pipe connecting the upper ends of thelegs, that end of the interchange pipe within the inlet leg of the tank being extended downward, and an auxiliary tank having an'outlet, the outlet from the body extending into said auxiliary tank. In testimony whereof I hereunto afiix'my signature.

ROBERT o. WEBB; 

